What is LIFE?

I have been asking myself. What is Life? We are living and getting old day by day. What is the purpose of life? Sooner or later there will always be death. Why even bother to live anyway? What is the purpose of life? I know that life is about making the good deed in order to have the place of heaven in the after life. But what is actually the purpose of living when you know that you know that eventually your life will end. I just can't seem to see the big picture of life. People died and child are born everyday as time goes by. But... What is the purpose of life? This question is a LOOP in my head for quite sometime now. I know the answer quite clearly but it just doesn't seem to be made quite adaptable in my mind and logic. I know it is wrong to questioned the GOD plans. I know. But still, my question still LOOP inside of me, WHAT IS THE PURPOSE OF LIFE? just, what is it...